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Call of Duty: MW4 DMZ – How to Repair the Air Base Tank

Rebuild the Hajin Air Base Tank to dominate combat and exfils in MW4 DMZ!

A tank inside a dimly lit hangar with a game interface overlay showing mission details and player stats.
A tank inside a dimly lit hangar with a game interface overlay showing mission details and player stats.
alexa author
By Alexandria LopezStaff Writer

  • Primary Subject: Call of Duty: Modern Warfare 4
  • Key Update: Players can gather four hidden vehicle parts across the Air Base in Modern Warfare 4 DMZ to repair and drive an armored combat tank.
  • Status: Confirmed
  • Last Verified: October 28, 2026
  • Quick Answer: Repair the MW4 DMZ Air Base Tank by collecting the Tank Water Pump, Plugs, Alternator, and Battery from Hajin, then installing them in the Workshop.

In Call of Duty: Modern Warfare 4 DMZ, you will need to repair an Air Base Tank so that you and your squad can drive it around Hajin.

Doing so is extremely beneficial for combat, mission objectives, and high-powered defense. The tanks can act as armored vehicles and are tied to specific operational changes. Plus, it's extremely effective at map control.

Wondering how to fix the Air Base Tank? Let me break it down for you.

How to Repair the Air Base Tank in Call of Duty: MW4 DMZ

In Modern Warfare 4 DMZ, you will find a repairable tank in the back of the Armory in the Air Base. It is located on the west side of Hajin. You will need four parts to repair the tank fully: a Tank Water Pump, Tank Plugs, Tank Alternator, and Tank Battery. All these items can be found on the map.

A video game screenshot showing a player character aiming at an armored vehicle in a futuristic setting with various HUD elements and icons.
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Credit: Activision

The Tank Water Pump can be found in the Air Base. It is near the Fuel Tank, around the Hangar Entrance. It is likely by the Fuel Tanks or in cabinets found within the Air Base.

The Tank Alternator is located in the Air Base Armory. To get it, you will need to unlock the armory using a code that can be cracked using nearby notes. You'll also need the Multi-Use Air Base Hangar Key Card. Once open, check the corners and shelves inside the Armory.

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For the Tank Battery, you'll need to head to the Bunker Tunnels of the Air Base Hangar. Make sure to check corners and shelves so you don't miss it. This is the last of the four items. Take note that you don't need to find them all in one match - you can exfil and stash them away until you're ready.

Once you have all the items, go through the Doors on the right side of the Armory to enter the Tank Workshop. Head towards the back of the Tank to input all the parts you have collected. After that, you can open the Air Base Hangar doors to drive the Tank out of the Air Base.

Air Base Tanks require gas - make sure to stop by Gas Stations frequently, as Gas Canisters won't work.

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